---What’s made Tommy so upset?
--- , I believe．It shocked him so much．
A. He lost the game
B. Lost the game
C. Losing the game
D. Because of losing the game
网友回答
A. He lost the game
B. Lost the game
(答案→)C. Losing the game
D. Because of losing the game
解析：考查非谓语动词。答句中losing the game动名词作主语，补全为Losing the game made Tommy so upset，故选C。